Our Prewinder Tools make quick work of large volume installations. The Prewinder temporarily reduces the diameter of the insert by compression so that it will install easily into the tapped hole. As the insert leaves the Prewinder and enters the tapped hole, it is pre-wound and in the correct lead and pitch to facilitate a smooth installation.

Unlike our competition, both the Mandrel and the Prewinder portions of the tool are made from Carbon Steel - built to stand the test of time and power through your toughest jobs. Proudly made in the USA.Need additional inserts? Looking for our complete kits?For a comprehensive list of our available kits, inserts, and tools - please visit ourHelical Thread Insertsummary page.